Avoiding Noise and Crosstalk
Noise and/or crosstalk can be reduced and maybe avoided by the
measures listed below.
Objective
Information in this section
Reducing Crosstalk 200
Wiring Up External Devices 200
Reducing Crosstalk
Crosstalk occurs if a signal with steep edges runs close to a high
impedance analog signal. The main reason for crosstalk is inductive
coupling. It can be reduced by the following measures:
n Twist each signal line with its return line (ground).
n Never twist two signal lines.
n Separate digital and analog signal lines. Keep fast‑changing signals
far away from analog inputs.
n Avoid connecting high‑impedance sources to the inputs of the
dSPACE boards.
n If you use multiconductor cables, the individual twisted pairs
should be shielded.
n You should also note the advice in Wiring Up External Devices
on page 200.
Measures
Wiring Up External Devices
Noise and/or crosstalk can be reduced and maybe avoided by the
following measures.
Objective
Where to go from here
s
General Notes and Tips on Signal Conditioning
t
200
s
DS1103 Hardware Installation and Configuration November 2014
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